Thanks a heap for the links Dave,
I guess for powering from a 25cc class of engine the boat is a little heavy. But she only ways in at 62 pounds fully loaded.
I couldn't find a water Jacket on the Enforcer site, Lot's of info on water pumps ans such.
There was a Aussie fella from Shark racing, His site has been down for about a year now. WHo had a comlete site dedicated to modifing these things.

Thanks again Dave

Neil